Piston-tool



H. E. STROHECKER.

PISTON TOOL.

APPLICATION FILED MAR- 13. I9I9.

1,325,177. Patented Dec.-16, 1919.

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WITNESSES: INVENTOR UNITED STATES PATENT OFFICE.

-HENBY EDWARD STROHEGKER, OF ENOJF VALLEY, PENNSYLVANIA.

PISTON-TOOL.

To all whom it may concern: I v Be it known that I, HENRY EDWARD STRO- HEGKER, a citizen of the United States, and a resident of Enon Valley, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Piston-Tools; and I do hereby declare the following to be a, full, .clear, and exact description thereof. I

' and has special reference to such devices for use in replacing pistons having movable packing rings within their cylinders, such as in automobile motors, etc.

The object of my invention is to form a cheap, simple and efiicient tool for replacing pistons; which can be made in one piece, and will enable the replacing of the piston within the cylinder easily and quickly and without injury to the piston, its rings or thecylinder. I

A still further object of the invention is to provide a piston replacing tool which will not contain any operative parts to be han dled or moved in using the tool, which are liable to become separated, misplaced or lost,-

when they are desired, as well as such. a tool which can be used not only for replacing the piston into either end of the cylinder, but can also be used as a gage to determine the size of the piston rings to be used'in the pistons.

To enable others skilled in the art to which my invention appertains to construct anduse my improved piston replacing tool,

I will describe the same more fully, refer- Fig. 4 is a cross-section of the same; and

Fig. 5 is a sectional view showing another form of the tool.

Like symbols of reference herein indicate like parts in each of the figures of the drawmgs.

As illustrated 'in the drawings, 1 represents the cylinder of an engine or motor,

Specification of Letters Patent. Application filed March 13, 1919. Serial no. 282,461.

My invention relates to tools for .pistons,'

Patented Dec. 16, 1919.

such as is used on an automobile or for other purposes, which is provided with the usual bore 2 therein for the reception and operation of the usual piston 3'within the same and which has the usual split packing-rings 4 and oil ring 5 mounted in the recesses 6 within the same.

The piston replacing tool is shown at T and comprises a solid integral ring, which is formed of any suitable metal, such as iron orv steel, and is of circular shape.

The ring7 has its bore 8 corresponding to and of the same diameter'as the bore of the cylinder 1, upon which it isaclaptedto engage, and the wall 9 forming such ring is provided with the two fiat side faces 11) and 11. Within the face 10 and extending outward from the bore 8 of the ring 7 is the chamfered face 12 which, when flat, is preferabl formed at the desired angle, and such face lnstead of being flat as shown, can alsobe of rounded or curved form as shown in Flg- 5'.

In the use and operation of my im roved piston replacing tool 7, when it is desired to replacethe piston 3, as shown in Fig. 1, the tool is placed around the piston and against theend of the cylinder 1, so that in such position the face 11 on the tool 7 will come against said cylinder end. While the tool 7 is thus held in this position by the operators hands, the piston 3 is forced into'the bore 2 of the cylinder 1, which will thereby allow the rings 4 and 5 to come in contact with the inclined face 12 on the tool to thus force said rings into their recesses 6 in the piston and permitthe piston and its rings to enter the bore of the cylinder.

In case the lower or oil ring 5 on the piston 3 has jumped out of the bore 2 of the cylinder 1 and it is desired to replace the same within the piston and the piston back into the bore of the cylinder with such ring in place, the tool 7 is placed around. the piston with its face 10 toward the end of such cylinder, so that the inclined face 12 on the tool will come in contact with the lower edge of said ring. When the tool 7 is in this position and upon forcing the same upward by the hands of the operator, so that the face 10 on the same will come against the lower end of the cylinder-1, the inclined face 12 on the tool will force the ring 5 into its recess 6 inthe piston 3 and then the piston can be 'forced upward into the bore of the cylinder.

In some makes of automobiles, below and cast into the lower end of each end cylinder, a strengthening rib is formed in the bearing supports, such rib being shown at 13 in Fig. '2, and. in such case, the replacing tool can be provided with a notch 14: in the outer face 9 of the wall 9. so that. such rib can fit into the same when the tool is placed around the piston for replacing the lower ring 5 and piston into the bore of the cylinder as above described. The face 9 can also be milled for handling.

It will be evident, as shown in Fig. 4, that the tool 7 can also be used as a piston gage and for testing the size of new, worn or oversize piston rings by placing one of such rings within the bore 8 of the same, which will also show if any space is formed at the split end of the ring.

Various other modifications, changes and applications of my improved piston tool may be resorted to within the scope of the appended claim, without departing from the spirit of the invention or sacrificing any of its advantages.

It will thus be seen that my improved piston tool can be easily and cheaply manufactured and sets of the same can be kept for use with various sizes of pistons, while in the use of the same it. will allow the piston to be easily and conveniently co1n pressed and guided through the same and into the cylinder, and at the same time such piston is also guided into the cylinder. The tool is easily handled in its operation, and being composed of a single integral part cannot get out of order or fail to operate, either in replacing pistons and theirrings or in acting as a gage in testing pistons and rings.

What I claim as my invention and desire to secure by Letters Patent is:

A device of the class described for use in replacing pistons having rings within cylinders having a strengthening rib at the lower end of the same, comprising a tool formed of a solid integral circular ring adapted to be placed over the piston and having two side faces and a bore corresponding to and of the same diameter as the bore of the cylinder, said ring having a chamfered portion extending out from its bore to one of said side piston rings, and a notch in the outer face of said ring for fitting around said rib.

In testimony whereof, I, the said HENRY EDwARo STROHECKER, have hereunto set my hand.

HENRY EDWARD STROHEUKEK Witnesses:

J M. GmGHmAN, J. N. Coons. 

